*SUPPORT*
IN: dax lug tufa dax OUT: PINK PINK GREEN
IN: kiki lug lug tufa kiki wif OUT: YELLOW GREEN YELLOW GREEN YELLOW GREEN YELLOW GREEN
IN: lug zup zup zup OUT: GREEN GREEN GREEN GREEN GREEN GREEN GREEN GREEN
IN: lug dax dax OUT: GREEN PINK PINK
IN: dax tufa dax OUT: PINK PINK
IN: dax OUT: PINK
IN: kiki wif OUT: YELLOW YELLOW
IN: fep OUT: BLUE
IN: fep tufa lug OUT: GREEN BLUE
IN: fep tufa fep OUT: BLUE BLUE
IN: dax dax tufa lug wif OUT: PINK GREEN PINK PINK GREEN PINK
IN: fep tufa fep zup wif OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: dax zup OUT: PINK PINK
IN: kiki tufa dax OUT: PINK YELLOW

*QUERY*
IN: lug tufa dax OUT: PINK GREEN
IN: dax tufa dax zup zup OUT: PINK PINK PINK PINK PINK PINK PINK PINK
IN: kiki tufa lug zup OUT: GREEN YELLOW GREEN YELLOW
IN: dax tufa lug wif OUT: GREEN PINK GREEN PINK
IN: kiki OUT: YELLOW
IN: kiki tufa kiki zup OUT: YELLOW YELLOW YELLOW YELLOW
IN: dax fep OUT: PINK BLUE
IN: dax tufa kiki OUT: YELLOW PINK
IN: lug OUT: GREEN
IN: fep kiki tufa fep OUT: BLUE BLUE YELLOW

*GRAMMAR*
dax -> PINK 
 lug -> GREEN 
 kiki -> YELLOW 
 fep -> BLUE 
 x1 zup -> [x1] [x1] 
 x1 wif -> [x1] [x1] 
 u1 tufa u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 